IEC 60534-2-3:2015

Overview

IEC 60534-2-3:2015 - "Industrial-process control valves - Part 2-3: Flow capacity - Test procedures" defines standardized test procedures for measuring the flow performance of industrial control valves. This third edition (2015) updates the 1997 edition, adds informative Annexes B–F and reorganizes content for clarity. The standard supports the flow equations given in IEC 60534-2-1 by providing the experimental methods to determine the variables used in valve sizing and performance prediction.

Key topics and requirements

• Scope of tests: Procedures cover both incompressible and compressible fluids and the required test system setup.
• Measured variables: Formal test methods to determine:
  • Flow coefficient (C)
  • Liquid pressure recovery factor without fittings (FL)
  • Combined liquid pressure recovery factor and piping geometry factor with fittings (FLP)
  • Piping geometry factor (FP)
  • Pressure differential ratio factors (xT and xTP)
  • Valve style modifier (Fd)
  • Reynolds number factor (FR)
• Test system and instrumentation: Guidance on test specimen installation, test section piping, throttling valves, flow and pressure measurement, temperature and travel measurement, and recommended pressure tap locations.
• Accuracy and data evaluation: Requirements for measurement accuracy, data reduction, and calculation methods for choked and non-choked flow conditions.
• Annexes (informative): Engineering data, derivation of valve style modifier, laminar flow discussion, long-form F test procedure, and guidance on matching pipe/valve port diameters.

Practical applications

• Valve manufacturers: validate product performance, publish certified flow coefficients and pressure recovery data for catalogues.
• Test laboratories: conduct repeatable, standardized flow tests for acceptance, R&D and compliance.
• Process engineers and specifiers: use measured C, FL/FLP, FP, xT/xTP, Fd, and FR values to improve valve sizing accuracy, predict noise and cavitation risk, and optimize piping geometry.
• Procurement and quality assurance: verify supplier claims and ensure consistent valve selection across projects.

Benefits and keywords

Using IEC 60534-2-3:2015 ensures consistent, repeatable valve testing and reliable input data for valve sizing, flow capacity, and performance modeling. Relevant keywords: industrial-process control valves, flow coefficient C, pressure recovery factor, valve test procedures, Reynolds number factor, piping geometry factor, IEC 60534 series.

Related standards

• IEC 60534-2-1 (flow equations and sizing) - the test results from 60534-2-3 are used directly with 2-1 equations.
• Other parts of the IEC 60534 series covering valve characterization and application guidance.